Valve plate of a piston cylinder

ABSTRACT

The structure of an air outlet valve plate of a piston cylinder of an air pump is disclosed. The air outlet valve plates comprises a cylinder mount, an air outlet valve plate, a cylinder, a cylinder inner pad and piston module, characterized in that the cylinder mount is locked to the cylinder by a locking element with the air outlet valve plate being positioned between the mount and the cylinder, and each of a branch plate of the valve plate is corresponding to each of the air hole on the top face of the cylinder, and the valve plate is a plate body with circular connection edge, and the interior of the valve plate is extended outward to form a plurality of equal branch plates, and an equidistant gap s formed between each of the branch plate and the branch plate is independently to be opened or closed, and the bottom face of the connection edge is provided with at least one positioning edge which is corresponding to the sealing pads arranged between the cylinder mount and the cylinder of the positioning edge slot, and an urging branch plate within the interior of the cylinder mount urges and restricts each of the branch plate of the air outlet valve plates such that the opening and closing of each of the branch plate are synchronized and of same aptitude of swinging such that the air flow rate of each air hole is uniform and equal.

BACKGROUND OF THE INVENTION

(a) Technical Field of the Invention

The present invention relates to a valve plate, and in particular, to avalve plate which allows the piston cylinder to increase compressed airflow rate.

(b) Description of the Prior Art

FIG. 1 depicts a conventional piston cylinder A1 comprising a cylinderA2, a cylinder mount A3 and a piston A4. The piston A4 is provided witha bottom bearing A5 for connection to a crank shaft A6 so that the powerfrom the motor is transferred to the piston A4 which proceeds to areciprocation movement.

The top section of the piston A4 has an air inlet sealing plate A41which moves downward together with the piston A4. Due to inertial forceand pressure, both the downward force push the air sealing plate A41 soas to allow air to quickly move into the cylinder A2 via the air inlethole A42 to be compressed. When the piston A4 moves upward, cylinder A2will start to compress the air and the effective compressed air isdirected into the air discharge seat A7 so that the valve A71 is pushedand the compressed air passes through the air conduit A8. The drawbackof the conventional valve plate is that the control mechanism is notuniform and therefore the cost of components of the valve plate isincreased. In order to increase the compressed air flow rate so as toincrease the volume of the piston cylinder, this method is ineffectiveto the small size air pump and therefore the objective to reduce cost ofproduction cannot be achieved.

Accordingly, it is an object to provide a valve plate of a pistoncylinder which can mitigate the drawbacks of the conventional valveplate.

SUMMARY OF THE INVENTION

The primary purpose of the present invention is to provide a valve plateof a piston cylinder of an air pump comprising a cylinder mount, an airoutlet valve plate, a cylinder, a cylinder inner pad and piston module,characterized in that the cylinder mount is locked to the cylinder by alocking element with the air outlet valve plate being positioned betweenthe mount and the cylinder, and each of a branch plate of the valveplate is corresponding to each of the air hole on the top face of thecylinder, and the valve plate is a plate body with circular connectionedge, and the interior of the valve plate is extended outward to form aplurality of equal branch plates, and an equidistant gap s formedbetween each of the branch plate and the branch plate is independentlyto be opened or closed, and the bottom face of the connection edge isprovided with at least one positioning edge which is corresponding tothe sealing pads arranged between the cylinder mount and the cylinder ofthe positioning edge slot, and an urging branch plate within theinterior of the cylinder mount urges and restricts each of the branchplate of the air outlet valve plates such that the opening and closingof each of the branch plate are synchronized and of same aptitude ofswinging such that the air flow rate of each air hole is uniform andequal.

Yet still another object of the present invention to provide a valveplate of a piston cylinder, wherein the piston module is mounted withone or at least one air inlet hole and a sealing plate according to theneed of the air inlet flow rate.

Still another object of the present invention is to provide a valveplate of a piston cylinder, wherein the interior of the cylinder ismounted with a wear-resistant inner pad for cylinder.

The foregoing object and summary provide only a brief introduction tothe present invention. To fully appreciate these and other objects ofthe present invention as well as the invention itself, all of which willbecome apparent to those skilled in the art, the following detaileddescription of the invention and the claims should be read inconjunction with the accompanying drawings. Throughout the specificationand drawings identical reference numerals refer to identical or similarparts.

Many other advantages and features of the present invention will becomemanifest to those versed in the art upon making reference to thedetailed description and the accompanying sheets of drawings in which apreferred structural embodiment incorporating the principles of thepresent invention is shown by way of illustrative example.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a conventional piston cylinder.

FIG. 2 is a perspective exploded view of a piston cylinder of thepresent invention.

FIG. 3 is an exploded view showing the components of the piston cylinderof the present invention.

FIG. 4 is a schematic view showing the bottom of the cylinder mount ofthe present invention.

FIG. 5 is a schematic view showing the bottom of the air outlet valveplate of the present invention.

FIG. 6 is a sectional view showing the air outlet valve plate of thepresent invention.

FIG. 7 is a sectional view of the entire piston cylinder and themovement of the piston cylinder of the present invention.

FIG. 8 is a schematic view showing the opening of the air outlet valveplate of the present invention.

FIG. 9 is a schematic view showing the closing of the air outlet valveplate of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The following descriptions are of exemplary embodiments only, and arenot intended to limit the scope, applicability or configuration of theinvention in any way. Rather, the following description provides aconvenient illustration for implementing exemplary embodiments of theinvention. Various changes to the described embodiments may be made inthe function and arrangement of the elements described without departingfrom the scope of the invention as set forth in the appended claims.

Referring to FIGS. 2 and 3, there is shown a piston cylinder of an airpump comprising a cylinder mount 1, an air outlet valve plate 2, acylinder 3, a cylinder inner pad 4 and a piston module 5. The cylindermount 1 is provided with an air fitting tube connector 12 for theconnection to a tube for pumping. The cylinder mount 1 is locked to thecylinder 3 by a locking member 12 with the valve plate 2 in between. Thevalve plate 2 covers a plurality of air holes 31 arranged in rows on thetop face of the cylinder 3, and besides forming as a sealing pad betweenthe cylinder mount 1 and the cylinder 2, the valve plate 2 providescontrol ability for air compression and air outleting.

In accordance with the present invention, the cylinder inner pad 4 maybe removed and the inner wall of the cylinder 3 is treated to allow thepiston module 5 to reciprocate within the cylinder 3. When the pistonmodule 5 moves downward, air is withdrawn into the cylinder. That is,the withdrawing of air is completed by way of the air sealing plate 52and the air inlet hole 51 at the top face of the piston. Thus, undereffective of increasing air and the compression of air flow, the numberof air inlet hole 51 and the air sealing plate 52 of the piston modulecan be increased.

As shown in FIGS. 5 and 6, the air outlet valve plate 2 is a flatstructure and the surrounding is a circular connection edge 20 and isextended outward to form a plurality of branched plates 21. In betweeneach of the branched plate 21, there is a gap 22 which is equidistantfor all the gap 22, and when each of the branched plate 21 covers theair outlet hole 31, the swinging of the branched plate 21 to open andclose is independent to each other. In addition, the bottom face of theconnection edge 20 surrounding the air outlet valve plate 2 is providedwith at least one positioning edge 23 which is corresponding to thepositioning edge slot 23 at the top face of the cylinder 3, forming intothe required air sealing plate between the cylinder mount and thecylinder 3 so as to provide additional function.

As shown in FIGS. 4 and 7, the cylinder mount 1 is secured to thecylinder 3 by using a locking member 12 and an air outlet valve plate 2is positioned in between. The interior of the cylinder mount 1 is anurging branched plate 13 corresponding to the individual plate 21. Theequal distance of the gap of the urging branched plate 13 allows each ofthe branched 21 to open or close at the same swinging amplitude suchthat the air outlet flow rate of each air outlet hole 31 are uniform andof equal amount. As shown in FIGS. 8 and 9, when the piston module 5within the cylinder 3 reciprocates at a high speed, the compressed airwithin the cylinder 3 will pass through the air outlet hole 31 at thetop section of the cylinder and the branched plate 21 is pushed tocompress to expel the air. When the piston module 5 moves downward, theexternal air is withdrawn via the air inlet hole 51 and air sealingplate 52. In view of the cylinder 3, this is air withdrawing and at thisinstance, each of the branched plate 21 is closed so that the externalair is smoothly directed into the cylinder 3 so as to complete aircompression and discharged.

It will be understood that each of the elements described above, or twoor more together may also find a useful application in other types ofmethods differing from the type described above.

While certain novel features of this invention have been shown anddescribed and are pointed out in the annexed claim, it is not intendedto be limited to the details above, since it will be understood thatvarious omissions, modifications, substitutions and changes in the formsand details of the device illustrated and in its operation can be madeby those skilled in the art without departing in any way from the spiritof the present invention.

1. A valve-plate of a piston cylinder of an air pump comprising acylinder mount, an air outlet valve plate, a cylinder, a cylinder innerpad and piston module, characterized in that the cylinder mount islocked to the cylinder by a locking element with the air outlet valveplate being positioned between the mount and the cylinder, and each of abranch plate of the valve plate is corresponding to each of the air holeon the top face of the cylinder, and the valve plate is a plate bodywith circular connection edge, and the interior of the valve plate isextended outward to form a plurality of equal branch plates, and anequidistant gap s formed between each of the branch plate and the branchplate is independently to be opened or closed, and the bottom face ofthe connection edge is provided with at least one positioning edge whichis corresponding to the sealing pads arranged between the cylinder mountand the cylinder of the positioning edge slot, and an urging branchplate within the interior of the cylinder mount urges and restricts eachof the branch plate of the air outlet valve plates such that the openingand closing of each of the branch plate are synchronized and of sameaptitude of swinging such that the air flow rate of each air hole isuniform and equal.
 2. The valves plate of a piston cylinder of claim 1,wherein the piston module is mounted with one or at least one air inlethole and a sealing plate according to the need of the air inlet flowrate.
 3. The valve plate of a piston cylinder of claim 1, wherein theinterior of the cylinder is mounted with a wear-resistant inner pad forcylinder.